do not partially open monero wallets at the same time on startup

lib/pages_desktop_specific/my_stack_view/coin_wallets_table.dart

@@ -60,6 +60,14 @@ class CoinWalletsTable extends ConsumerWidget {
                             ref.read(currentWalletIdProvider.state).state =
                                 walletIds[i];
 
+                            final manager = ref
+                                .read(walletsChangeNotifierProvider)
+                                .getManager(walletIds[i]);
+                            if (manager.coin == Coin.monero ||
+                                manager.coin == Coin.wownero) {
+                              await manager.initializeExisting();
+                            }
+
                             await Navigator.of(context).pushNamed(
                               DesktopWalletView.routeName,
                               arguments: walletIds[i],

lib/services/coins/monero/monero_wallet.dart

@@ -792,14 +792,31 @@ class MoneroWallet extends CoinServiceAPI {
         }
       };
 
+  Future<void> _updateCachedBalance(int sats) async {
+    await DB.instance.put<dynamic>(
+      boxName: walletId,
+      key: "cachedMoneroBalanceSats",
+      value: sats,
+    );
+  }
+
+  int _getCachedBalance() =>
+      DB.instance.get<dynamic>(
+        boxName: walletId,
+        key: "cachedMoneroBalanceSats",
+      ) as int? ??
+      0;
+
   @override
   Future<Decimal> get totalBalance async {
+    try {
       final balanceEntries = walletBase?.balance?.entries;
       if (balanceEntries != null) {
         int bal = 0;
         for (var element in balanceEntries) {
           bal = bal + element.value.fullBalance;
         }
+        await _updateCachedBalance(bal);
         return Format.satoshisToAmount(bal, coin: coin);
       } else {
         final transactions = walletBase!.transactionHistory!.transactions;
@@ -812,8 +829,12 @@ class MoneroWallet extends CoinServiceAPI {
           }
         }
 
+        await _updateCachedBalance(transactionBalance);
         return Format.satoshisToAmount(transactionBalance, coin: coin);
       }
+    } catch (_) {
+      return Format.satoshisToAmount(_getCachedBalance(), coin: coin);
+    }
   }
 
   @override

lib/services/coins/wownero/wownero_wallet.dart

@@ -820,14 +820,31 @@ class WowneroWallet extends CoinServiceAPI {
         }
       };
 
+  Future<void> _updateCachedBalance(int sats) async {
+    await DB.instance.put<dynamic>(
+      boxName: walletId,
+      key: "cachedWowneroBalanceSats",
+      value: sats,
+    );
+  }
+
+  int _getCachedBalance() =>
+      DB.instance.get<dynamic>(
+        boxName: walletId,
+        key: "cachedWowneroBalanceSats",
+      ) as int? ??
+      0;
+
   @override
   Future<Decimal> get totalBalance async {
+    try {
       final balanceEntries = walletBase?.balance?.entries;
       if (balanceEntries != null) {
         int bal = 0;
         for (var element in balanceEntries) {
           bal = bal + element.value.fullBalance;
         }
+        await _updateCachedBalance(bal);
         return Format.satoshisToAmount(bal, coin: coin);
       } else {
         final transactions = walletBase!.transactionHistory!.transactions;
@@ -840,8 +857,12 @@ class WowneroWallet extends CoinServiceAPI {
           }
         }
 
+        await _updateCachedBalance(transactionBalance);
         return Format.satoshisToAmount(transactionBalance, coin: coin);
       }
+    } catch (_) {
+      return Format.satoshisToAmount(_getCachedBalance(), coin: coin);
+    }
   }
 
   @override

lib/services/wallets.dart

@@ -238,7 +238,7 @@ class Wallets extends ChangeNotifier {
                 walletIdsToEnableAutoSync.contains(manager.walletId);
 
             if (manager.coin == Coin.monero || manager.coin == Coin.wownero) {
-              walletsToInitLinearly.add(Tuple2(manager, shouldSetAutoSync));
+              // walletsToInitLinearly.add(Tuple2(manager, shouldSetAutoSync));
             } else {
               walletInitFutures.add(manager.initializeExisting().then((value) {
                 if (shouldSetAutoSync) {
@@ -328,7 +328,7 @@ class Wallets extends ChangeNotifier {
               walletIdsToEnableAutoSync.contains(manager.walletId);
 
           if (manager.coin == Coin.monero || manager.coin == Coin.wownero) {
-            walletsToInitLinearly.add(Tuple2(manager, shouldSetAutoSync));
+            // walletsToInitLinearly.add(Tuple2(manager, shouldSetAutoSync));
           } else {
             walletInitFutures.add(manager.initializeExisting().then((value) {
               if (shouldSetAutoSync) {